ASTROSAT CZTI

Data Quality Report

Orbit 54008

Creation date: 2025-09-22T13:50:40.934805
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_041T01_9000006510_54008cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54008cztM0_level2_quad_clean.evt
Size (bytes)601,678,08084,611,520
Size573.8 MB 80.7 MB
Events in quadrant A4,079,880572,548
Events in quadrant B3,640,256671,244
Events in quadrant C3,171,923599,033
Events in quadrant D10,900,064288,206

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167341
B0152761
C0139201
D0366711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61775248.483082%
B61772063.334952%
C61781021.651020%
D6178313850.793137%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7417 6178 466 466 6.28% 7.54%
B 7417 6178 124 124 1.67% 2.01%
C 7418 6179 77 77 1.04% 1.25%
D 7418 6179 3134 3134 42.25% 50.72%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 1489495 9605.7 623 607 155.0
A 8 6 82277 526.9 623 607 155.0
A 0 8 26427 166.58 623 607 155.0
B 0 213 363797 2616.2 657 634 138.8
B 5 250 242223 1740.39 657 634 138.8
B 0 155 156676 1124.12 657 634 138.8
C 14 80 190764 1052.69 657 650 180.6
C 9 53 158961 876.6 657 650 180.6
C 12 250 153242 844.93 657 650 180.6
D 8 176 8138631 63019.9 447 426 129.1
D 2 172 171007 1320.93 447 426 129.1
D 6 127 167891 1296.8 447 426 129.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter